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Many scientists believe that bipedal locomotion (walking on two feet) evolved in early hominids in response to the move from life in dense forests to life in open grasslands. ██████████ █████ ████ ███████ █████ ████████ ██ ███ ████ ████ ████████ ███████ ████ ██ ██████ ████ ███ ██ ██████ ███ █████ ██████████ ████████ ███████ ██████████ ████ █████ ████ █████████ ███████████ ██████████ ████ █████ ████████ ███ █████ ████ ███ ███████████ █████████ ████ █████ ██████ ████████ █████ ██ ███ ██████ ██████ ███ ████████████████ █████████ ██████████ ███ ████████ ██ ███ ████ ████ ████████ ████ ███ ███████ ██████ ████████ ██ ████ █████ █████ ███████ ██ ████████ ██ ████████████ ████ ██ ███████ █ █████
Summary
The stimulus discusses the evolution of bipedal locomotion (walking on two feet) in early hominids. It suggests that this evolution may have been triggered by the move from dense forests to open grasslands. Bipedalism would have helped early hominids see over tall grasses, locate food, and avoid predators. However, it also would have been advantageous in forests for gathering food within standing reach and possibly for improving mating chances. Because it conferred substantial advantages in many scenarios, debate continues about its precise origins.
Strongly Supported Conclusions
There is ongoing scientific debate concerning the origins of bipedalism.
Bipedalism aided early hominids in dense forests and open grasslands.
5.
Which one of the following ██████████ ██ ████ █████████ ██ ███ ███████████ ██████
a
For early hominids, ██████ ████████████ ████ █████████ ████ ██████████ ████ █████████ █████████████
b
Bipedal locomotion would ████ ██████ █████ ████████ ██████ █████
c
Bipedal locomotion actually █████ ███ ██ ████████████ ██ ████████ ██████ ██ ████ █████████ █████████████
d
Bipedal locomotion probably ███████ █████ █████ ████████ ███ ███████████ █████████ ██████ █████████████
e
For early hominids, █████████ ████ ███ ████ ████████ ██ ████████ ████ ███ █████████ ███ ████████ ██████████